Diodes Incorporated
SO 8

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AP2318 (Not Recommended for new design)

NRND = Not Recommended for New Design

600MA ULDO Regulator with ENABLE

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The AP2318 is a series of ultra low dropout regulators optimized for low voltage applications where transient response and minimum input voltage are critical. The AP2318 provides current limit and thermal shutdown. Its circuit includes a trimmed bandgap reference to assure output voltage accuracy to be within ±1.5%. On-chip thermal shutdown provides protection against any combination of overload and ambient temperatures that would create excessive junction temperatures. The AP2318 has both fixed and adjustable versions. The 1.3V fixed versions integrate the corresponding resistor divider. The adjustable version can set the output voltage through two external resistors.


· Wide Operating Voltage Ranges: 2.5V to 12V · Output Voltage Accuracy: ±1.5% · On-chip Thermal Shutdown · ESD: Human Body Model 3kV Machine Model 600V · Operating Junction Temperature: -40C to 125C


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Product Specifications

Product Parameters

Accuracy 25C 1.50%
Adj. Vout (V) 2.5 to 10
Adjust VFB 0.8
Adj. Vout 2.5,10
Adjustable VFB (V) 0.8
Automotive Compliant and PPAP capable no
Channels 1
Compliance (Only Automotive supports PPAP) Standard
Enable Active H
Features Wide Vin
Fixed Vout (V) 1.3
Fixed Vout(V) 1.3
Fixed Vout(V) 1.3
IOUT 0.6
Iout (A) 0.6
IQ (mA) 250
Iq (max) (µA) 400
Iq (max) (µA) 400
Iq (max) (µA) 250
Iq (typ) (µA) 250
Iq (typ) (µA) 250
Noise uV RMS 10-100 kHz 360
Operating Temperature (Ambient) (°C) -40 to 85
Output Discharge no
Output options Adjustable & Fixed
PSRR (dB) 1K Hz 65
PSRR (dB) 1kHz 65
VCTL Function no
VDROPOUT (Max) 0.35
VDROPOUT (Max) (V) at Max Current and Max Ouput Voltage 0.35
VDROPOUT (Max) (V) at Max Current and Max Voltage 0.35
VDROPOUT (Max)(V) at Max Current and Max Voltage 0.35
VIN (Max) 12
Vin (Max) (V) 12
VIN (Min) 2.5
Vin (Min) (V) 2.5
VOUT 1.3, ADJ(0.8)
Vout (max) 12
Vout (min) 0.8

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Product Change Notices (PCNs)

A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

PCN # Issue Date Implementation Date Subject
PCN-2492 2020-11-04 2021-05-04 Device End of Life (EOL)